So I brought my 4 year old MBP into Apple. They found slight water damage on the Logic Board and are telling me that in order to replace they battery, they'd have to replace the Logic Board too. This will run about $1,100. Obviously out of the question. They won't just sell the battery, so I have no options other than a third party. Do any companies make a replacement battery that isn't total ****? I'm really out of options here. They battery sometimes lasts 3 or 4 hours but will often just instantly drop to 0% at random. I travel often so this is an issue. Any help you guys could give would be appreciated.